NINA 3.1 HF2 and my QHY247C Sequencing Problems

I'm having a problem running my sequences in NINA. First let me list my equipment: CEM70 iOptron mount, QHY247C camera, Pegasus Falcon v1 rotator, ZWO Focuser, RedCat 51, Orion 60mm scope with ZWO ASI174 (for guiding), Pegasus Ultimate Power Box V3, MeLE Quieter3C Fanless Mini PC with Windows 11. The RedCat and guide scope are mounted on my Explore Scientific ED102. Wow that a lot of money, I've spent! Now the problem.  Last night I was sequencing The Heart and Soul nebulae. Several times the sequence stopped (Legacy sequencer) before my preset number of 60, 6 min exposures. The mount parked and the camera went to warming mode. Guiding stopped, and the progress of exposures showed that I had finished taking all 60 (in reality, not even close).   Now this didn't happen to me before, but admittedly, I've just started DSO photography. Also very curiously, the camera sensor which had been set to -10 C, showed a temp of over 2 billion degrees!   And these problems "seemed" to start after my upgrade to NINA 3.1 HF2. Or is it my camera?  Or is it Windows 11, corrupt driver?  I'm not sure. I was wondering if anyone out there has experienced anything like this.  Before this occasion, I sequenced the Cygnus loop and the North America and Pelican nebulae without incident. Any help would be appreciated from, the much more knowledgeable than I,  members of the forum. Thanks,Richard Strouse